Wednesday, 7 December 2016

Codeigniter Ajax Crud using DataTables - Insert / Add Data



In this post we will discussing on how can we insert data using Ajax in Codeigniter. This is one more video on Codeigniter ajax crud opearation with DataTables. In previous we have seen how can we load into DataTables by using Ajax Server side processing in Codeigniter Framework. But In this part we will Insert or Add data into Mysql database table in Codeigniter Application by using Ajax. So we can Insert data into database without page refresh. For Inserting or Adding data we have use Bootstrap Modals, we will implement form under Bootstrap Modals and this modal will be initialize by clicking button and then after we can fill form data and insert data into database by using Ajax request. After inserting or adding data into table then after we will update data of DataTables. So we will insert data using Ajax request in Codeigniter application and display that data on data table without page refresh.

You have already know how can we use Ajax for insert data in simple php script but in Codeigniter framework we have to follow the rules for Modal view controller pattern. Here according to modal view controller pattern, Ajax will send request for Insert data from view to controller and controller will send request for insert data to modal and modal will insert data and again send request to controller and controller again send request to view page and on that page we have display updated data in Data tables table by using DataTables reload method. We have use new form data object for sending form data to server in Ajax request.



Source Code


Controllers - crud.php


 <?php  
 defined('BASEPATH') OR exit('No direct script access allowed');  
 class Crud extends CI_Controller {  
      //functions  
      function index(){  
           $data["title"] = "Codeigniter Ajax CRUD with Data Tables and Bootstrap Modals";  
           $this->load->view('crud_view', $data);  
      }  
      function fetch_user(){  
           $this->load->model("crud_model");  
           $fetch_data = $this->crud_model->make_datatables();  
           $data = array();  
           foreach($fetch_data as $row)  
           {  
                $sub_array = array();  
                $sub_array[] = '<img src="'.base_url().'upload/'.$row->image.'" class="img-thumbnail" width="50" height="35" />';  
                $sub_array[] = $row->first_name;  
                $sub_array[] = $row->last_name;  
                $sub_array[] = '<button type="button" name="update" id="'.$row->id.'" class="btn btn-warning btn-xs">Update</button>';  
                $sub_array[] = '<button type="button" name="delete" id="'.$row->id.'" class="btn btn-danger btn-xs">Delete</button>';  
                $data[] = $sub_array;  
           }  
           $output = array(  
                "draw"                    =>     intval($_POST["draw"]),  
                "recordsTotal"          =>      $this->crud_model->get_all_data(),  
                "recordsFiltered"     =>     $this->crud_model->get_filtered_data(),  
                "data"                    =>     $data  
           );  
           echo json_encode($output);  
      }  
      function user_action(){  
           if($_POST["action"] == "Add")  
           {  
                $insert_data = array(  
                     'first_name'          =>     $this->input->post('first_name'),  
                     'last_name'               =>     $this->input->post("last_name"),  
                     'image'                    =>     $this->upload_image()  
                );  
                $this->load->model('crud_model');  
                $this->crud_model->insert_crud($insert_data);  
                echo 'Data Inserted';  
           }  
      }  
      function upload_image()  
      {  
           if(isset($_FILES["user_image"]))  
           {  
                $extension = explode('.', $_FILES['user_image']['name']);  
                $new_name = rand() . '.' . $extension[1];  
                $destination = './upload/' . $new_name;  
                move_uploaded_file($_FILES['user_image']['tmp_name'], $destination);  
                return $new_name;  
           }  
      }  
 }  

crud_model.php


 <?php  
 class Crud_model extends CI_Model  
 {  
      var $table = "users";  
      var $select_column = array("id", "first_name", "last_name", "image");  
      var $order_column = array(null, "first_name", "last_name", null, null);  
      function make_query()  
      {  
           $this->db->select($this->select_column);  
           $this->db->from($this->table);  
           if(isset($_POST["search"]["value"]))  
           {  
                $this->db->like("first_name", $_POST["search"]["value"]);  
                $this->db->or_like("last_name", $_POST["search"]["value"]);  
           }  
           if(isset($_POST["order"]))  
           {  
                $this->db->order_by($this->order_column[$_POST['order']['0']['column']], $_POST['order']['0']['dir']);  
           }  
           else  
           {  
                $this->db->order_by('id', 'DESC');  
           }  
      }  
      function make_datatables(){  
           $this->make_query();  
           if($_POST["length"] != -1)  
           {  
                $this->db->limit($_POST['length'], $_POST['start']);  
           }  
           $query = $this->db->get();  
           return $query->result();  
      }  
      function get_filtered_data(){  
           $this->make_query();  
           $query = $this->db->get();  
           return $query->num_rows();  
      }       
      function get_all_data()  
      {  
           $this->db->select("*");  
           $this->db->from($this->table);  
           return $this->db->count_all_results();  
      }  
      function insert_crud($data)  
      {  
           $this->db->insert('users', $data);  
      }  
 }  

crud_view.php


 <html>  
 <head>  
   <title><?php echo $title; ?></title>  
      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>  
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />  
      <script src="https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>  
      <script src="https://cdn.datatables.net/1.10.12/js/dataTables.bootstrap.min.js"></script>            
      <link rel="stylesheet" href="https://cdn.datatables.net/1.10.12/css/dataTables.bootstrap.min.css" />  
      <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>  
   <style>  
           body  
           {  
                margin:0;  
                padding:0;  
                background-color:#f1f1f1;  
           }  
           .box  
           {  
                width:900px;  
                padding:20px;  
                background-color:#fff;  
                border:1px solid #ccc;  
                border-radius:5px;  
                margin-top:10px;  
           }  
      </style>  
 </head>  
 <body>  
      <div class="container box">  
           <h3 align="center"><?php echo $title; ?></h3><br />  
           <div class="table-responsive">  
                <br />  
                <button type="button" data-toggle="modal" data-target="#userModal" class="btn btn-info btn-lg">Add</button>  
                <br /><br />  
                <table id="user_data" class="table table-bordered table-striped">  
                     <thead>  
                          <tr>  
                               <th width="10%">Image</th>  
                               <th width="35%">First Name</th>  
                               <th width="35%">Last Name</th>  
                               <th width="10%">Edit</th>  
                               <th width="10%">Delete</th>  
                          </tr>  
                     </thead>  
                </table>  
           </div>  
      </div>  
 </body>  
 </html>  
 <div id="userModal" class="modal fade">  
      <div class="modal-dialog">  
           <form method="post" id="user_form">  
                <div class="modal-content">  
                     <div class="modal-header">  
                          <button type="button" class="close" data-dismiss="modal">&times;</button>  
                          <h4 class="modal-title">Add User</h4>  
                     </div>  
                     <div class="modal-body">  
                          <label>Enter First Name</label>  
                          <input type="text" name="first_name" id="first_name" class="form-control" />  
                          <br />  
                          <label>Enter Last Name</label>  
                          <input type="text" name="last_name" id="last_name" class="form-control" />  
                          <br />  
                          <label>Select User Image</label>  
                          <input type="file" name="user_image" id="user_image" />  
                     </div>  
                     <div class="modal-footer">  
                          <input type="submit" name="action" class="btn btn-success" value="Add" />  
                          <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>  
                     </div>  
                </div>  
           </form>  
      </div>  
 </div>  
 <script type="text/javascript" language="javascript" >  
 $(document).ready(function(){  
      var dataTable = $('#user_data').DataTable({  
           "processing":true,  
           "serverSide":true,  
           "order":[],  
           "ajax":{  
                url:"<?php echo base_url() . 'crud/fetch_user'; ?>",  
                type:"POST"  
           },  
           "columnDefs":[  
                {  
                     "targets":[0, 3, 4],  
                     "orderable":false,  
                },  
           ],  
      });  
      $(document).on('submit', '#user_form', function(event){  
           event.preventDefault();  
           var firstName = $('#first_name').val();  
           var lastName = $('#last_name').val();  
           var extension = $('#user_image').val().split('.').pop().toLowerCase();  
           if(jQuery.inArray(extension, ['gif','png','jpg','jpeg']) == -1)  
           {  
                alert("Invalid Image File");  
                $('#user_image').val('');  
                return false;  
           }  
           if(firstName != '' && lastName != '')  
           {  
                $.ajax({  
                     url:"<?php echo base_url() . 'crud/user_action'?>",  
                     method:'POST',  
                     data:new FormData(this),  
                     contentType:false,  
                     processData:false,  
                     success:function(data)  
                     {  
                          alert(data);  
                          $('#user_form')[0].reset();  
                          $('#userModal').modal('hide');  
                          dataTable.ajax.reload();  
                     }  
                });  
           }  
           else  
           {  
                alert("Bother Fields are Required");  
           }  
      });  
 });  
 </script>  

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